Berteand j



(No Model.)

J. HOFPAGKERV.

. SQLDERING IRON.

N0. 319,904. Patented June 9; 1885.

N4 PETERS Phmo-Lilhogrlpher, Walhlrxgtnn, u, c.

NITED STATES PATENT Trice.

BERTRAND J. HOFFAOKER, OF NEW YORK, N. Y.

SOLDERING-IRON.

. SPECIFICATION forming part of Letters Patent No. 319,904, dated June9, 1885.

Application filed January 2-2, 1885.

To all whom it may concern:

Be it known that I. BERTRAND J. HOFF- AOKER, a citizen of the UnitedStates, residing at New York, in the county of NewYork and 5 State ofNew York, have invented new and useful Improvements in Soldering-Irons,of which the following is a specification.

Figure lillustrates one form of the device, A being a copper covering ofa thickness varying with the weight of the bar used, and ad justable bymeans of a central cone, a, which enters a bore, a, extending from theapex of the bar B to a transverse perforation, 0, with which itcommunicates. \Vhen the bar is to be reheated, its covering may bereadily detached by means of a jerking-rod bearing on cone a,andsomewhat projecting into the transverse perforation c, when it is to beplaced, apex downward, within a trough-shaped bottomless cast or sheetiron pocket or receptacle, Fig. 3, placed across the furnace-top, and bymeans of flanges f f resting upon its rim. Thus radiation is made ofservice for heating the covering previous to its use in soldering, whileits position obviously is the most practicable for its conjunction withthe bar.

Device A,Fig. 2,illustrates a difi'erent mode of adj u stingthe coveringto the bar. Angular projection a is to extend to the rear of thetransverse groove g,whereby theinsertion of a spike is permitted and afirm conjunction is effected.

Shank s, Fig. 1, connects bar B and handle H by means of screws at itsextremities, a nut or tail-plate, t, serving to fasten it to the handle,the latter being perforated longitudinal1y,and having a central tube, H.A shieldplate, 6, is fastened to the handle by means of clamps-c withingrooves g g, in order to prevent contact of the hand with the shankduring use of the tool. Fig. 4 illustrates the shield-plate, which, fora less ponderous tool, serves to connect the handle and shank by meansof a nut, n, at its reverse side, the per- 5 foration of the handlebeing dispensed with.

Device S is a. supply-spring, having in its (No model.)

anterior extremity a triangular perforation for the insertion of acorrespondinglyshaped bar of solder, b, of optional length, and to bemanipulated by thumb -pressure. Thus is cf fected perfect control of thesolder-supply,preeluding any waste. By means of a springclasp, c, towhich S is riveted, it may be revolved, and also detached forthwithwhenever the bar requires reheating.

Fig. 5 illustrates a cylindriform bar, socket, and shank. It consists oftwo uniform longitudinal divisions, D D, combined by joints i z andtheir socket H. By removing transverse screw 8 either division may bedetached,when the screw is to be replaced. The usefulness of the deviceamply demonstrates itself for working angles of but little compass.

Fig. 6 illustrates a division of this bar device, A being its covering.Efficacious'connection is had by semicircular projection 0, bearingwedge-like on conical groove What I claim as my invention,and desire tosecure by Letters Patent, is-

1. The construction of conical, semi-coni- 7o cal, and rectangularprojections attached to square or triangular apex coverings forsoldering-irons, in combination wit-h a bar having a bore or groovecorresponding to such projections, and a transverse slot or groovethrough which a spike may be inserted to secure the covering to the bar,substantially as shown, and for the purpose set forth.

2. The construction of a dividable heatingbar and its socket providedwith such perforations and grooves as to allow the use of either squareor triangular coverings, as specified.

3. The construction of a solder supply spring, including its anteriortriangular perforation and circular fastening-clasp, as described.

BERTRAND J. HOFFAGKER.

WVitnesses:

THos. A. BIRCH, WILLIAM E. BIRCH.

